Days later, the creator of FairUse4WM released a new version that cracked Microsoft's patch. However, while this version allowed individual files to be stripped of DRM, it did not enable people to download and strip subscription services' entire catalogs.

Microsoft's response has been to assure its Windows Media licencees via memo that it has teams "working around the clock" to beat FairUse4WM, according to Engadget, which originally reported the story.

"The issue is a Microsoft issue, obviously. At the end of the day, we're using Windows Media as the application, and therefore we need Microsoft to ensure that the service is secure," a representative for BSkyB said Monday.

"The responsible way is to take it down or suspend it until we've secured the new patch," the representative added. A statement made by BSkyB last week apologized to the service's users for the interruption, but claimed the suspension would "support the continuing development of legal services that will meet customers' needs in the long term."

The debate over DRM technology is becoming increasingly heated, with the Free Software Foundation backing an "Anti-DRM day," scheduled for Oct. 3. Many in the content creation industry argue the technology is necessary to protect intellectual property and stimulate creativity, while some in the opposite camp view it as a cynical attempt by media companies to gain greater control over customers' usage of their products.

"As we did with the initial circumvention, Microsoft will use the built-in renewability features of Windows Media DRM to deploy an update to address this circumvention," Microsoft senior product manager Marcus Matthias said in a statement. "We are working on an update and have alerted our content provider customers. When ready, we will work with our content partners to deploy this solution."

David Meyer reported for ZDNet UK from London. CNET News.com's Ina Fried contributed to this report.

Correction: The digital rights management utility FairUse4WM was misidentified in the original version of this story.